KR200339104Y1 - Clothes dryer for variably and controllably feeding hot or cold wind - Google Patents

Abstract

The present invention discloses a cold and hot air variable supply controlled clothes dryer for drying a laundry by supplying hot and cold air variably. The present invention is installed in the cabinet with a door, a drum which is installed to rotate inside the cabinet and is provided with a plurality of main vent holes in the bottom to communicate with the drying chamber for receiving laundry, and the drum is installed inside the cabinet It is composed of a motor for rotating the fan and a blower installed inside the cabinet to generate a blowing force of air. Each of the first and second introduction ducts introduces air blown from the blower into the drying chamber through the main vent holes of the drum, and the discharge duct induces the discharge of air from the drying chamber of the drum to the outside of the cabinet. Each of the first and second heaters operates under the control of a controller to heat air blown through the first and second introduction ducts with hot air. According to the present invention, by supplying hot and cold air to the drying chamber of the drum variably to improve the drying efficiency of the laundry, it is possible to obtain the sterilization effect by maintaining the temperature of the drying chamber at a high temperature, the occurrence of wrinkles and damage to the laundry Can be effectively prevented. In addition, the laundry can be uniformly distributed by the drum rotation and the lifters attached to the inner surface of the drum to prevent the agglomeration of the laundry, and the intake and exhaust functions are provided through the main vent holes formed at the bottom of the drum. By the structure of a flow path which can be parallel, it can be easily simplified and downsized.

Description

CLOTHES DRYER FOR VARIABLY AND CONTROLLABLY FEEDING HOT OR COLD WIND}

The present invention relates to a clothes dryer, and more particularly, a cold and hot air variable supply controlled clothes for efficiently drying laundry by supplying hot and cold air at the same time or selectively supplying either hot or cold air to dry the laundry. It relates to a dryer.

In general, laundry such as clothes and fabrics is naturally dried after being left in the air in a well-expanded state by using a hanger or a clothesline after washing. The natural drying of the laundry involves many difficulties in drying the laundry because it is greatly influenced by the climate in cloudy weather, rainy days, winter. On the other hand, in the case of urban areas, it is difficult to allow laundry to be left in the air due to air pollution, which makes it difficult to dry naturally. It is increasing. Recently, various types of clothes dryers have been developed to solve various problems caused by natural drying of laundry and to improve convenience.

As an example of the prior art, Korean Patent Laid-Open Publication No. 2002-92816 and Patent No. 390515 disclose a laundry dryer having a washing function and a drying function. The laundry dryer is basically installed to rotate by driving a motor inside the cabinet for washing laundry, and includes a drum for receiving laundry, a water supply device and a drainage device for water supply and drainage of water. The laundry dryer further includes a blower for blowing air inside the drum for drying the laundry, an introduction duct for forming an air flow path, and a heater for heating the air blown through the introduction duct. After the laundry dryer having such a structure is finished washing and dehydrating the laundry, by blowing the air through the introduction duct by the operation of the blower, by heating the air with hot air by the operation of the heater to supply the inside of the drum, Dry the laundry by hot air.

The laundry dryers of these technologies have the advantage of being able to wash and dry laundry in a batch. However, the laundry dryer has to be manufactured to have a washing capacity of a predetermined size or more in order to perform a basic washing function, it is difficult to miniaturize, the structure is quite complicated by the addition of the drying function. In particular, there is a problem that can only be used in places where water supply and drainage are possible. In addition, since the hot air is applied only to the surface of the laundry because the dry air is blown to dry the laundry inside the drum, the inside laundry that is not affected by the hot air may not be dried properly, and the laundry is aggregated. There is a problem that a lot of wrinkles occur while drying. And in order to increase the drying efficiency of the laundry aggregated by the hot air, if the temperature of the hot air is increased or the time is extended, the laundry may be damaged.

As another example of the prior art, Patent Publication Nos. 1998-115, 2003-45548 and 2003-62871 disclose a clothes dryer capable of exclusively drying laundry after washing. The clothes dryer of these technologies is installed horizontally to rotate inside the cabinet, and includes a drum for receiving laundry, a motor for rotating the drum, a blower for blowing hot air inside the drum, an introduction duct and a heater. . The clothes dryer of these techniques disperses the laundry inside the drum by the rotation of the drum, and blows hot air into the dispersed laundry to dry the laundry, thereby improving the drying efficiency of the laundry compared to the laundry dryer.

In such a clothes dryer, the drying efficiency of laundry varies according to various factors such as hot air temperature, air volume, and wind speed. The higher the temperature of the hot air can improve the drying efficiency, but the hot air temperature is maintained at about 95 ℃ because of the high risk of causing damage to the laundry due to overheating of the laundry and the drum. Therefore, the air volume, the temperature of hot air, and the method of preventing damage to clothes, which are substantially in contact with the laundry, are acting as important factors for improving the drying efficiency. In order to increase the air flow in contact with the laundry, various design methods such as the structure of the drum, the output of the blower, and the change of the flow path have been attempted. It is not developed.

In addition, in order to uniformly dry the laundry, the temperature distribution of the drum must be maintained uniformly, but the flow of hot air is not active actively inside the drum, which is accompanied by a disadvantage in that a large temperature distribution occurs. In particular, overheating of the drum is caused by an increase in drying time, which causes laundry to come into contact with the surface of the overheated drum, causing damage, and as the temperature of the cabinet increases, the user who contacts the cabinet is exposed to burns. It is implicated. On the other hand, the cold air is supplied for a predetermined time after drying the hot air to prevent wrinkles of the laundry, but insufficient to prevent the occurrence of wrinkles, has a disadvantage that the drying time is delayed.

The present invention is devised to solve various problems of the prior art as described above, and the object of the present invention is to supply hot and cold air to the drying chamber of the drum at the same time or to suit any one of the hot and cold air to dry laundry It is to provide a variable temperature controlled supply dryer of cold and hot air that can be selectively supplied and the temperature distribution of the drying chamber is maintained uniformly to greatly improve the drying efficiency of the laundry.

Another object of the present invention is to prevent the occurrence of wrinkles as the laundry repeatedly contacts hot and cold winds by the variable supply of hot and cold winds, and the thermal shock that is continuously applied to the laundry is alleviated so that the amount of air at a relatively high temperature It is possible to supply, so to provide a dry and cold variable supply controlled clothes dryer that can dry laundry more effectively without damage.

Still another object of the present invention is to provide a cold / hot air variable supply controlled clothes dryer that can obtain a sterilization effect by maintaining the temperature of the drying chamber at a high temperature.

Another object of the present invention is to minimize the overall length of the flow path by the structure of the flow path through which the intake and exhaust functions can be performed through the main vent holes formed in the bottom of the drum, and to simplify and downsize easily, To provide a cold and hot air variable supply controlled clothes dryer that can be manufactured.

Another object of the present invention is to supply a part of the air discharged from the drying chamber to the non-exposed surface of the laundry that is in contact with the inner surface of the drum heated during the drying operation variable supply control of cold and hot air that can assist the flow and drying of the laundry There is a clothes dryer.

Another object of the present invention is to provide a cold and hot air variable supply controlled clothes dryer that can uniformly disperse laundry to effectively prevent the agglomeration of the laundry and the generation of wrinkles, and can easily withdraw the laundry in the drying room.

Still another object of the present invention is to provide a variable temperature control type clothes dryer that can easily carry out sterilization drying of laundry by supplying anion and ozone generated from ultraviolet rays and anion generator radiated from an ultraviolet lamp to a drum drying chamber. have.

A feature of the present invention for achieving the above object, the cabinet is equipped with a door that can open and close the front entrance; A drum which is installed to rotate inside the cabinet and has a plurality of main vent holes formed on the bottom thereof so as to communicate with a drying chamber for storing laundry; A drum driving means installed inside the cabinet to rotate the drum; A blower installed inside the cabinet to generate a blowing force of air; Air having a first introduction duct and a second introduction duct for inducing the air blown from the blower to be introduced into the drying chamber through the main vent holes of the drum, and an exhaust duct for inducing the discharge of air from the drum's drying chamber through the main vent holes. Guide means; First heating means for heating the air blown through the first introduction duct of the air guide means with hot air; Second heating means for heating the air blown through the second introduction duct of the air guide means with hot air; Cold and hot air variable supply control type consisting of a controller for controlling the operation of the first heating means and the second heating means to selectively supply either hot or cold air through the first introduction duct and the second introduction duct of the air induction means There is a clothes dryer.

1 is a longitudinal sectional view showing a configuration of a clothes dryer according to the present invention;

2 is a cross-sectional view taken along the line II-II of FIG. 1;

Figure 3 is a cross-sectional view showing to explain the flow of hot air and cold air in the clothes dryer according to the present invention,

Figure 4 is a longitudinal sectional view showing a configuration in which an outer drum is applied as a modification of the clothes dryer according to the present invention,

Figure 5 is a longitudinal sectional view showing the configuration of the first introduction duct, the first heater and the outer drum in a variant of the clothes dryer according to the present invention,

6 is a cross-sectional view taken along line VI-VI of FIG. 5;

Figure 7 is a cross-sectional view showing to explain the flow of hot air and cold air in a variant of the clothes dryer according to the present invention,

8 is a cross-sectional view taken along line VII-VII of FIG. 7;

9a to 9d are views showing to explain the flow of laundry, the supply of hot air and cold air by drums and lifters in a variation of the clothes dryer according to the present invention,

10a to 10d are diagrams for explaining the relationship between the radius of the drum, the number of revolutions per minute and the laundry in the clothes dryer according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

1: laundry 10: cabinet

14: door 20: drum

21: drying chamber 23: main vent hole

24: sub vent hole 30: lifter

31: vent 40: motor

50: blower 51: fan motor

52: first fan 53: second fan

60: air induction means 61: first introduction duct

62: second introduction duct 63: discharge duct

70: partition means 71: passage

72: drive chamber 73: partition plate

74: outer drum 80: the first heater

81: second heater 90: ultraviolet lamp

91: first negative ion generator 92: second negative ion generator

100: control panel 110: controller

Hereinafter, a preferred embodiment of the cold / hot air variable supply controlled clothes dryer according to the present invention will be described in detail with reference to the accompanying drawings.

First, referring to Figures 1 to 7, the clothes dryer of the present invention is provided with a box-shaped cabinet 10 constituting the appearance. An inlet 11 through which the laundry 1 can be inserted and drawn out is formed at the front of the cabinet 10, and a vent hole 12 is formed at the rear thereof to allow ventilation. The rear of the cabinet 10 may be formed with a grill (Grill) instead of the vent 12, the vent 12 and the grill may be applied to the other side of the cabinet 10 as necessary. A plurality of legs 13 supporting the cabinet 10 are mounted on the lower surface of the cabinet 10. And the front of the cabinet 10, the door 14 is rotated around the hinge 15 is mounted to open and close the inlet 11 of the cabinet 10, the door 14, the inside of the cabinet 10 Is equipped with an observation window 16 that can observe. The horizontal partition plate 18 arranged horizontally in close proximity to the inside of the cabinet 10 to maintain a predetermined distance from the top plate 17 partitions the top plate 17 and the inside of the cabinet 10 up and down. The space formed between the upper plate 17 and the horizontal partition plate 18 of the cabinet 10 becomes an air insulation layer that blocks heat transfer, and the horizontal partition plate 18 can reinforce the strength of the cabinet 10. have.

Moreover, inside the cabinet 10, the drum 20 which has the drying chamber 21 which accommodates the laundry 1 is installed horizontally so that it may rotate. The inlet 22 of the drum 20 is formed to have a diameter larger than the inlet 11 of the cabinet 10 so as to facilitate the input and withdrawal of the laundry 1, and is close to the inlet 11 of the cabinet 10. At the bottom of the drum 20, a plurality of main vent holes 23 communicating with the drying chamber 21 are formed. In the present embodiment, the drum 20 is described and illustrated as being installed horizontally inside the cabinet 10, but this is only an example, and the front of the cabinet 10 is adjusted by adjusting the height of the legs 13 to be suitable for use. To increase the height and lower the rear can be installed inclined or upright clothes dryer of the present invention. On the other hand, in the inclined installation of the cabinet 10, it is possible to use a conventional supporting device capable of adjusting the angle as needed.

1, 3 to 5, and 7 and 8, a plurality of lifters 30 are longitudinally formed on the inner surface of the drum 20 to induce dispersion by flowing the laundry 1. It is attached along. 5, 7 and 8, the lifters 30 are formed with a plurality of vent holes 31 along the longitudinal direction. 8 and 9A to 9D, the cross-sections of the lifters 30 are shown to be formed in a triangular shape, but this is merely an example, and the cross-sections of the lifters 30 may be formed in a semicircular shape, an elliptical shape, or the like as necessary. . In addition, two lifters 30 are shown to be attached to the inner surface of the drum 20 to correspond, but the number and position of the lifters 30 can be appropriately changed as necessary. On the outer surface of the drum 20 to which the lifters 30 are attached, a plurality of sub vent holes 24 are formed along the length direction so as to communicate with the vent holes 31 of the lifters 30. On the other hand, the sub vent holes 24 of the drum 20 and the vent holes 31 of the lifters 30 are equally applicable to the drum 20 and the lifter 30 shown in Figs. Can be.

1 to 7 again, the clothes dryer of the present invention is a drum driving means for rotating the drum 20, which is installed at the rear of the motor 40 and the drum 20, and is required to dry the laundry 1. And a blower 50 for blowing air to be used. The motor 40 of the drum drive means may be constituted by a geared motor in which a synchronous motor or a reducer is integrally formed. Synchronous motors have the advantage of low cost, and geared motors have the advantage of obtaining accurate rotation speed. The blower 50 is composed of a single fan motor 51 which provides a driving force, and a first fan 52 and a second fan 53 which rotate by the driving of the fan motor 51 to generate a blowing force. It is.

1 to 8, the clothes dryer of the present invention includes an air induction means 60 for inducing air blown by the operation of the blower 50 to the main vent holes 23 of the drum 20. do. The air guide means 60 is composed of a first introduction duct 61 and a second introduction duct 62 for introducing air to the right and left sides with respect to the center of the drum 20. In the present specification, the hot air means hot air that is heated by a heating means and supplied to the drying chamber 21 of the drum 20 through the first and second introduction ducts 61 and 62, and the cold air is not heated. It refers to air at room temperature supplied to the drying chamber 21 of the drum 20 through the first and second introduction ducts 61 and 62.

1, 3 and 6 to 8, the outlet 61a of the first introduction duct 61 is disposed to be close to the right rear side of the drum 20 so that the vertical center axis L of the drying chamber 21 is located. ₁ ) Blow air on the right side. The outlet 62a of the second introduction duct 62 is disposed to be close to the left rear side of the drum 20 and blows air to the left side based on the vertical center axis L ₁ of the drying chamber 21. The distance between the rear surface of the drum 20 and the outlets 61a and 62a of the first and second introduction ducts 61 and 62 interferes with the drum 20 and the first and second introduction ducts 61 and 62. Without this, a part of the air discharged through the outlets 61a and 62a may be maintained to be introduced into the drying chamber 21 through the main vent holes 23 of the drum 20. The outlets 61a and 62a of the first and second introduction ducts 61 and 62 are aligned to correspond to each other on the horizontal center axis L ₂ of the drying chamber 21. 2, 6 and 8 illustrate that the cross-sections of the first and second introduction ducts 61 and 62 are formed in a quadrangular shape having the same size, but the first and second introduction ducts 61 and 62 are illustrated in FIG. The cross-sectional shape and size of can be changed as needed.

6, 8 and 9A to 9D, the cross-sectional areas of the lifters 30 are smaller than the cross-sectional areas of the outlets 61a and 62a of the first and second introduction ducts 61 and 62. That is, the cross-sectional area of the lifters 30 is designed to be about 30 to 50% of the cross-sectional areas of the outlets 61a and 62a. Due to the design of the lifters 30 and the first and second introduction ducts 61 and 62, the lifters 30 may be formed by the lifting of the first and second introduction ducts 61 and 62. Even when aligned in front of the outlets 61a and 62a, the outlets 61a and 62a are not blocked by the lifters 30 and open. Therefore, the air discharged through the outlets 61a and 62a of the first and second introduction ducts 61 and 62 is smoothly supplied to the drying chamber 21 through the main vent holes 23 of the drum 20. In addition, the inner ends 61b and 62b of the first and second introduction ducts 61 and 62 are located at a distance from the front end 32 of the lifters 30 based on the inner surface of the drum 20. Accordingly, the outlets 61a and 62a of the first and second introduction ducts 61 and 62 may be more effectively prevented from being blocked by the lifters 30, thereby supplying air more smoothly.

Referring to FIGS. 1 to 8 again, the discharge duct 63 of the air guide means 60 may be configured to guide the air discharged from the drying chamber 21 of the drum 20 to the outside of the cabinet 10. 10) is mounted through. One end of the discharge duct 63 disposed above the first and second introduction ducts 61 and 62 is spaced apart from the rear right side of the drum 20 at a predetermined interval. In this way, the first and second introduction ducts 61 and 62 and the discharge duct 63 of the air guiding means 60 are arranged at the rear of the drum 20, so that the main vent hole of the drum 20 ( 23) can be shared for intake and exhaust. In the present embodiment, the discharge duct 63 may be provided with a conventional filter capable of removing lint and moisture.

On the other hand, the clothes dryer of the present invention is provided with a partition means 70 for dividing the inside of the cabinet 10 before and after with respect to the rear of the drum (20). The inner front of the cabinet 10 is an area in which the drum 20 is installed based on the rear of the drum 20 by nutrients of the partition means 70, and the air flows between the cabinet 10 and the drum 20. An inducible passageway 71 is formed. And the inner rear of the cabinet 10 is the drive chamber 72 to the area where the motor 40 and the blower 50 are installed. The partition means 70 blocks the flow of air between the passage 71 and the drive chamber 72.

1 to 3, a partition plate 73 is shown as an example of the partitioning means 70. The outlets 61a and 62a of the first and second introduction ducts 61 and 62 are arranged to penetrate the partition plate 73 so as to be close to the rear surface of the drum 20, and the partition plate 73 has a passage 71. A discharge duct 63 is connected to discharge air from the cabinet 10 through the cabinet 10. Air discharged from the drying chamber 21 of the drum 20 to the passage 71 through the inlet 22 and the main vent holes 23 is discharged to the outside of the cabinet 10 through the discharge duct 63. The motor 40 is mounted at the rear center of the partition plate 73, and the shaft 41 of the motor 40 is coupled to the center of the drum 20 through the partition plate 73.

5 to 8 show an outer drum 74 surrounding the drum 20 as another example of the partitioning means 70. An air passage 71 is formed between the outer surface of the drum 20 and the inner surface of the outer drum 74, and the tip of the outer drum 74 is fixed to maintain the airtightness on the inner surface of the cabinet 10. . The outlets 61a and 62a of the first and second introduction ducts 61 and 62 are arranged to penetrate the bottom of the outer drum 74 and approach the rear surface of the drum 20, and the bottom of the outer drum 74. An exhaust duct 63 is connected to the air outlet 71 so as to discharge air from the passage 71 through the cabinet 10.

The outer drum 74 has a function of the air inducing means 60 for guiding the air discharged through the inlet 22 of the drum 20, that is, the mixed air of hot and cold air to the passage 71. Some of the mixed air flowing through the passage 71 between the drum 20 and the outer drum 74 passes through the sub vent holes 24 of the drum 20 and the vent holes 31 of the lifters 30. Introduced back to (21), the remaining mixed air is discharged out of the cabinet (10) through the discharge duct (63) connected to the bottom of the outer drum (74). The motor 40 is mounted at the rear center of the outer drum 74, and the shaft 41 of the motor 40 is coupled to the center of the drum 20 through the outer drum 74.

As shown in Figs. 2, 5 and 6, the first and second introduction ducts 61 and 62 of the air induction means 60 are first heating means for heating the blown air with hot air. The second heater 81 is mounted as the heater 80 and the second heating means, respectively, and the first and second heaters 80 and 81 may be formed of ceramic tube heaters. The temperature of the hot air by heating the first and second heaters 80 and 81 is set at about 95 ° C. to prevent damage to the laundry 1 and to sterilize microorganisms such as fungi and bacteria contained in the air. . The first and second heaters 80 and 81 of the first and second heating means may be replaced by plane heaters that generate heat by application of power. The planar heating element is a kind of resistor, which is made of a thin film by applying an electrical insulator to the inner surface or the outer surface of the first and second introduction ducts 61 and 62 and then applying a conductive paint on the electrical insulator.

1, 3 to 5 and 7, the inner surface of the door 14 is equipped with an ultraviolet lamp 90 for emitting ultraviolet rays to sterilize the drying chamber 21 of the drum 20. As shown in FIGS. 2, 3, 6 and 7, the first and second introduction ducts 61 and 62 of the air induction means 60 are respectively provided with first and second introduction ducts 61 and 62. The first and second anion generators 91 and 92 are installed to generate and supply negative ions and a small amount of ozone to the air blown through the circumference.

1 to 7, the upper portion of the front of the cabinet 10 includes a motor 40, a fan motor 51 of the blower 50, first and second heaters 80 and 81, and an ultraviolet lamp 90. And a control panel 100 for controlling the operation of the first and second negative ion generators 91 and 92 according to the user's setting. The front of the control panel 100 is equipped with a plurality of buttons 101 for setting the function of the clothes dryer of the present invention, the controller 110 is embedded inside the control panel 100. The controller 110 is composed of a microcomputer 111 in which a program for controlling the operation of the clothes dryer is programmed, and a printed circuit board 112 on which the microcomputer 111 and related circuit components are mounted.

It will now be described the operation of the cold-hot air variable supply controlled clothes dryer of the present invention having such a configuration, mainly the clothes dryer of the modification according to the present invention shown in Figures 4 to 8 and 9a to 9d. Explain.

4 to 6, the user opens the door 14, puts the laundry 1 containing water into the drying chamber 21 of the drum 20, closes the door 14, and closes the control box. By operating the buttons 101 of 100, functions such as time, temperature, reservation, sterilization and the like are set so as to be suitable for drying the laundry 1. The ultraviolet rays of 253.7 nm emitted to the drying chamber 21 of the drum 20 by the operation of the ultraviolet lamp 90 sterilize microorganisms such as fungi and bacteria contaminated in the laundry 1 or air.

As shown in FIGS. 9A and 9B, when the motor 40 is driven and the drum 20 is rotated clockwise, the lifters 30 are positioned at the bottom of the drying chamber 21 together with the rotation of the drum 20. The laundry 1 is placed in a clockwise direction, and the laundry 1 moved by the lifters 30 is dispersed while falling from the upper part of the drying chamber 21. At this time, even when the drum 20 is rotated counterclockwise by driving the motor 40, the rotation and dispersion of the laundry 1 by the lifters 30 are similar to the clockwise rotation of the drum 20. Will be done. By rotating and dispersing the laundry 1, the laundry 1 can be effectively prevented from agglomeration in the drying chamber 21, and the surface of the laundry 1 can be uniformly kept in contact with air. Therefore, it is possible to improve the drying efficiency of the laundry 1, and to minimize the wrinkles remaining on the laundry 1 after drying.

Subsequently, the fan motor 51 of the blower 50 is driven at the same time as the clockwise rotation of the drum 20 by the driving of the motor 40 to rotate the first fan 52 and the second fan 53. . The air blown by the rotation of the first fan 52 is guided through the first introduction duct 61, and the air blown by the rotation of the second fan 53 is guided through the second introduction duct 62. do. When air is blown through the first and second introduction ducts 61 and 62 by the operation of the blower 50, the first heater 80 is operated under the control of the controller 110, and the second heater 81 is operated. ) Stop.

Meanwhile, the air passing through the first introduction duct 61 by the operation of the first heater 80 is heated by hot air, and the hot air discharged through the outlet 61a of the first introduction duct 61 is illustrated in FIGS. As shown by the arrow " H ₁ "in Figs. 7 and 9A to 9D, they are introduced to the right side of the drying chamber 21 through the main vent holes 23 of the drum 20. Figs. The cold air discharged through the outlet 62a of the second introduction duct 62 at the same time as the hot air is supplied is the drum 20 as shown by the arrow “C ₁ ” of FIGS. 3, 7 and 9A to 9D. It is introduced to the left side of the drying chamber 21 through the main vent holes (23) of.

As shown in FIG. 7 and FIG. 9C, the lifters 30 are positioned at the front of the outlets 61a and 62a of the first and second introduction ducts 61 and 62, even when the lifters 30 are aligned. Since the inner ends 61b and 62b are designed not to be blocked, air discharged through the outlets 61a and 62a of the first and second introduction ducts 61 and 62 is discharged through the main vent hole 23 of the drum 20. It is smoothly introduced into the drying chamber 21 through the ().

Subsequently, hot air and cold air simultaneously introduced into the drying chamber 21 of the drum 20 are arrows of FIGS. 3, 7 and 9A to 9D due to the rotation and dispersion of the laundry 1 and the rotation of the lifters 30. Mixing with each other as indicated by "H ₂ " and "C ₂ " causes strong turbulence. Such turbulence actively contacts the laundry 1 that is rotated and dispersed in the drying chamber 21, and uniformly distributes the drying efficiency of the laundry 1 by making the temperature distribution of the drying chamber 21 uniform.

As shown in FIG. 9A, the laundry 1 positioned at the lower part of the drying chamber 21 is moved by the drum 20 and the lifters 30 rotated, as shown in FIG. 9B. It is moved to the left area. As indicated by the arrow "H ₃ " in FIG. 9B, the hot air supplied to the drying chamber 21 is supplied to the right side of the laundry 1 to be moved, i.e., the rear region. The laundry 1 is not disturbed and hot air supply can be maintained smoothly.

On the other hand, the drum 20 and the lifter 30 is rotated in the clockwise direction together are arrow "H _1" of the hot air introduced into the right side of Fig. 9c of the drying chamber 21 through the main vent holes 23 of the drum 20 As shown by the bottom of the drying chamber 21 is pushed down to generate a down stream, by the hot air of the down stream is centered on the vertical center axis (L ₁ ) of the drying chamber 21 in accordance with the clockwise rotation of the drum (20) This can effectively dry the laundry (1) mostly located on the left side. The lifters 30 rotated clockwise together with the drum 20 indicate hot air introduced into the left side of the drying chamber 21 through the main vent holes 23 of the drum 20, as indicated by the arrow "C ₁ " in FIG. 9C. As it is pushed to the upper part of the drying chamber 21, an upward airflow is generated.

3 and 7, the air in the drying chamber 21 containing the water evaporated from the laundry 1, that is, the mixed air of hot and cold air, enters the inlet 22 of the drum 20 and the main vent hole 23. ) And through the sub-ventilation holes 24 to the passage 71 between the drum 20 and the outer drum 74, as indicated by arrows "A ₁ " in FIGS. 3 and 7. Through 63) is discharged out of the cabinet 10 as indicated by arrow " A ₂ ". Some of the mixed air flowing along the passage 71 between the drum 20 and the outer drum 74 has a sub-vent hole of the drum 20 as indicated by the arrow "A ₃ " in Figs. 7 and 9A-9D. It is introduced back into the drying chamber 21 through the vent holes 31 of the 24 and the lifters 30. The laundry is blown into the non-exposed surface of the laundry 1 moved by the lifter 30 and in contact with the inner surface of the drum 20 heated during the mixed drying operation supplied through the vent holes 31 of the lifters 30. Assist the flow and drying of 1).

By supplying hot and cold air to the drying chamber 21 of the drum 20 as described above, the laundry 1 of the drying chamber 21 is repeatedly contacted with the hot and cold air, thereby effectively preventing the occurrence of wrinkles. In addition, since the thermal shock continuously applied to the laundry 1 can be alleviated to supply a relatively high temperature air volume, the laundry 1 can be dried more effectively without damage. Specifically, the cold air introduced into the drying chamber 21 through the outlet 62a of the second introduction duct 62 and the main vent holes 23 of the drum 20 is indicated by the arrow “C ₁ ” in FIG. 9C. As described above, the laundry 1 of the drying chamber 21 is cooled for a predetermined time while being lifted by the lifters 30 that rotate. By cooling the laundry 1, since the thermal shock imparted to the laundry 1 by hot air is greatly alleviated, damage to the laundry 1 can be reduced than when the laundry 1 is dried only by hot air. The wrinkles generated in (1) can be greatly reduced. The temperature of the drying chamber 21 can be increased by the anti-wrinkle effect of the hot air and cold air and the circulation phenomenon in the drying chamber 21, so that the drying efficiency can be improved and high temperature sterilization effect can be obtained.

On the other hand, the cold air introduced into the drying chamber 21 through the vent holes 31 of the lifters 30 during the drying operation of the laundry 1 is blown to the laundry 1 which is in contact with the inner surface of the drum 20 while the drum ( 20) and spaced between the lifters 30 and the laundry (1), to reduce the thermal shock of the non-exposed surface of the laundry (1) in contact with the drum (20) heated by hot air to prevent damage to the laundry (1) Can be. In addition, since the agglomeration phenomenon of the laundry 1 can be effectively prevented, wrinkles remaining in the laundry 1 after drying can be minimized, and the laundry 1 can be easily withdrawn from the drying chamber 21 of the drum 20. Can be. The passage 71 between the drum 20 and the outer drum 74 serves as a heat insulating layer that blocks heat transfer between the cabinet 10 and the drum 20, thereby preventing the surface temperature of the cabinet 10 from being overheated. Accordingly, it is possible to prevent burns due to the user's contact with the cabinet 10 and to prevent deterioration of the controller 110 and related circuit components included in the control panel 100, thereby improving reliability and safety.

Finally, when drying of the laundry 1 is completed, the microcomputer 103 of the controller 110 outputs a control signal in accordance with the program to the motor 40, the fan motor 51 of the blower 50, the first The operation of the heater 80, the ultraviolet lamp 90 and the second negative ion generator 92 is stopped. The user opens the door 14 and withdraws the laundry 1 from the drying chamber 21 through the inlet 11 of the cabinet 10 and the inlet 22 of the drum 20.

3 and 7, in the clothes dryer according to the present invention, hot air and cold air may be supplied under various control by the controller 110. When the fan motor 51 of the blower 50 is driven at the same time as the clockwise rotation or the counterclockwise rotation of the drum 20 by the driving of the motor 40, the first and second fans 52 and 53 are rotated. The air blown by the rotation of the first and second fans 52 is guided through the first and second introduction ducts 61 and 62. When both the first and second heaters 80 and 81 are operated by the control of the controller 110, the air flowing through the first and second introduction ducts 61 and 62 is heated by hot air, and thus the main body of the drum 20 is heated. It is supplied to the drying chamber 21 through the ventilation holes 23. On the other hand, when both of the first and second heaters 80 and 81 are stopped by the control of the controller 110, the air flowing through the first and second introduction ducts 61 and 62 is cooled in the drum 20. It is supplied to the drying chamber 21 through the main ventilation holes 23. When both the first and second heaters 80 and 81 are stopped and cold air is supplied through the first and second introduction ducts 61 and 62, the first and second anion generators are controlled by the controller 110. It is possible to supply both anion and ozone to the drying chamber 21 by operating both (91, 92) or only one of them.

As described above, when simultaneous operation or stop of the first and second heaters 80 and 81 is alternately performed by the control of the controller 110 and the hot and cold winds are alternately supplied, hot and cold winds are simultaneously supplied. Likewise, the occurrence of wrinkles of the laundry 1 can be prevented, and thermal shock continuously applied to the laundry 1 can be alleviated to supply a relatively high temperature air volume, and greatly improve the efficiency of drying. On the other hand, under the control of the controller 110, simultaneous operation or stop of the first and second heaters 80 and 81 may be continuously performed for a predetermined time. In the clothes dryer of the present invention, simultaneous supply of hot and cold winds, alternating supply of hot and cold winds, and continuous supply of hot and cold winds may be performed in parallel. For example, in the initial operating state of the clothes dryer, only the hot air is supplied to raise the temperature of the drying chamber 21, and then the hot air and the cold air are simultaneously supplied to dry the laundry 1, and only the cold air is supplied at the last step to wash the laundry ( The drying of 1) can be completed.

1 to 3, the outer drum 74 described above is applied through a passage 71 formed between the cabinet 10 and the drum 20 by the partition plate 73 of the partition means 70. As in the mixed air discharged through the inlet 22 of the drum 20 can be smoothly guided to the discharge duct 63 and discharged. The partition plate 73 has the advantage of being able to manufacture the clothes dryer of the present invention at a low price since its configuration is simpler than that of the outer drum 74.

9A to 9B, in the cold / hot air variable supply control clothes dryer of the present invention, the laundry 1 is circularly moved along the inner surface of the drum 20 by the rotation of the drum 20. In order to disperse the laundry 1 moving in a circular motion from the inner surface of the drum 20 and disperse it in the drying chamber 21 of the drum 20, the rotational speed of the drum 20 is appropriately controlled by driving the motor 40. It must be designed to be controlled.

As shown in FIG. 10A, the clothes dryer according to the present invention has a lower portion of the vertical center axis L ₁ of the drum 20 at which the laundry 1 is initially positioned in the stopped state of the drum 20 at 0 °. In addition, when the drum 20 rotates in a clockwise direction, the angle θ from which the laundry 1 moving in a circular motion is separated from the inner surface of the drum 20 is It is designed within. The laundry 1 is circularly moved along the inner surface of the drum 20 at 0 ° to less than 100 °. The angle at the time when the laundry 1, which is circularly moved by the rotation of the drum 20, is separated from the inner surface of the drum 20 by 100 ° is designed. When the laundry 1 is separated from the laundry 1 does not fall toward the center of the drying chamber 1 because it slides down along the inner surface of the drum 20. The departure start time of the laundry 1 is 100 ° is the minimum angle at which the laundry 1 detached from the inner surface of the drum 20 can be dispersed while falling toward the center of the drying chamber 1.

On the other hand, the laundry 1 has to be separated from the inner surface of the drum 20 before reaching 180 °, that is, the upper part of the drum 20, and the laundry 1 is separated when the laundry 1 moving in the circular motion passes through the exit end angle 180 °. Without this, it is not possible to expect the desired drying efficiency by continuously circular motion along the inner surface of the drum (20). The circular motion and separation of the laundry 1 are the same even when the drum 20 rotates counterclockwise.

As shown in FIG. 10B, when the radius r of the drum 20 is designed to be 0.15 m, and the laundry 1 having a mass of 1 kg is located at a departure start time of 100 °, the laundry 1 has gravity. (F) (kgm / sec ² ) and centrifugal force (F ′) (kgm / sec ² ) are acted on. When the vector sum F " of gravity F and centrifugal force F ′ acting on the laundry 1 is plotted in the tangential direction of the drum 20, the centrifugal force F ′ is measured and 1.7 kg m / sec. ^{Becomes 2} At this time, the minute rotation speed (rpm) of the drum 20 can be obtained by the equation (1).

Where m is the weight of the laundry (kg), g is the acceleration of gravity (m / sec ² ), Is the rotational speed (m / sec), r is the radius of the drum (m), l is the circumferential length of the drum (m), and t is the time (sec) required for one revolution of the drum.

Referring to FIG. 10C, when the laundry 1 reaches the exit end angle 180 °, the gravity F and the centrifugal force F ′ acting on the laundry 1 are in equilibrium, that is, On the back, the laundry 1 is continuously circular motion without being separated from the inner surface of the drum 20. At this time, the minute rotation speed (rpm) of the drum 20,

Becomes

In FIG. 10D, a concentric drum r ₁ of 0.15 m and a drum 20 ′ of 0.23 m of radius r ₂ are shown. "When the position in the exit start angle 100 ° of gravity (F ₂₎ and the centrifugal force (F ₂ acting on the laundry (1) washing (1) of the mass 1kg the drum 20, the vector sum of a), (F _2" ) the drums 20 'and to achieve a tangential direction of gravity (F ₂₎ and the centrifugal force (F _2' gravity (F acting on the laundry (1) of the drum 20, the size of) ₁₎ and the centrifugal force (F ₁ It can be seen that the same as'). The minute rotation speed (rpm) of the drum 20 'is

When the laundry 1 reaches an exit end angle of 180 °, the minute rotation speed (r.p.m) of the drum 20 'is

Becomes

On the other hand, the centrifugal force F 'of the laundry 1 in If is constant, Equation 5 below is established.

As described above, the minute rotation speed (rpm (r ₁ )) of the drum 20 having a radius r ₁ of 0.15 m and the rotation speed of the drum 20 'having a radius r ₂ of 0.23 m (rpm) If the relationship of (r ₂ )) is applied to Equation 5,

It can be seen that this holds true. In other words, If we increase this approximately 1.24 times Become, If this decreases by about 1.24 times It can be seen that the same as. Therefore, the relationship between the radius of the drum (r ₁ , r ₂ ) and the minute rotation speed (rpm (r ₁ ), rpm (r ₂ )) according to equation ( ₆ ),

It can be seen that this holds true. Therefore, in the clothes dryer of the present invention, when the radius of the drum is r, the angle θ of the laundry moving in circular motion is separated from the inner surface of the drum. In order to satisfy the range of, the minute rotation speed (rpm) of the drum must be maintained to satisfy the equation (8).

That is, when the drum is designed with a radius (r ₁ ) of 0.15 m and a radius (r ₂ ) of 0.23 m, respectively, the angle (θ) at which the laundry is separated from the inner surface of the drum When the minute rotation speed (rpm (r ₁ ), rpm (r ₂ )) of the drum satisfying the range of

Should be Equation 9 is verified by Equations 1 to 4 described above. In this way, by the minute rotation speed of the drum satisfying Equation (8), the lower part of the vertical center axis of the drum is 0 °. Since the laundry moving in a circular motion in accordance with the rotation of the drum in the range of the fall off from the surface of the drum, can greatly improve the drying efficiency of the clothes dryer in the present invention.

The embodiments described above are merely to describe preferred embodiments of the present invention, the scope of the present invention is not limited to the described embodiments, and those skilled in the art within the spirit and claims of the present invention Various changes, modifications, or substitutions may be made thereto, and such embodiments are to be understood as being within the scope of the present invention.

As described above, according to the cold / hot air variable supply control clothes dryer according to the present invention, the hot and cold winds may be simultaneously supplied to the drum's drying chamber or the hot and cold winds may be selectively supplied, and the temperature distribution of the drying chamber may be uniformly supplied. Maintaining can greatly improve the drying efficiency of the laundry, and can maintain the temperature of the drying room at a high temperature to obtain a sterilization effect. In addition, as the laundry repeatedly contacts hot and cold winds, wrinkles are effectively prevented, and thermal shocks continuously applied to the laundry are alleviated to supply a relatively high air volume, thereby allowing the laundry to dry more effectively without damage. . In addition, the overall length of the flow path can be minimized by the structure of the flow path capable of performing the intake and exhaust functions at the same time through the main ventilation holes formed in the bottom of the drum. During the drying operation of the laundry, some of the air discharged to the non-exposed surface of the laundry, which is in contact with the inner surface of the drum, may be supplied again to assist the flow and drying of the laundry. Generation can be effectively prevented, and the laundry in the drying room can be easily withdrawn. In addition, there is a useful effect that the sterilization drying of the laundry can be easily carried out by supplying ultraviolet rays emitted from the ultraviolet lamp and anion and ozone generated from the first and second anion generators to the drying chamber of the drum.

Claims (11)

A cabinet equipped with a door for opening and closing the front entrance; A drum which is installed to rotate inside the cabinet and has a plurality of main vent holes formed at a bottom thereof so as to communicate with a drying chamber for storing laundry; A drum driving means installed inside the cabinet to rotate the drum; A blower installed inside the cabinet to generate a blowing force of air; A first introduction duct and a second introduction duct for introducing air blown from the blower into the drying chamber through the main vent holes of the drum, and for inducing the discharge of air from the drum through the main vent holes Air inducing means having a discharge duct; First heating means for heating the air blown through the first introduction duct of the air guide means with hot air; Second heating means for heating the air blown through the second introduction duct of the air guide means with hot air; Cold and hot air variable consisting of a controller for controlling the operation of the first heating means and the second heating means to variably supply any one of hot air and cold air through the first introduction duct and the second introduction duct of the air induction means Supply controlled clothes dryer. According to claim 1, wherein each of the first inlet duct, the second inlet duct and the outlet duct of the air induction means so that the main vent holes of the drum in parallel with the introduction of air and the discharge of air from the drying chamber of the drum; Cold and hot air variable supply controlled clothes dryer disposed at the rear of the drum. According to claim 1 or claim 2, wherein the first introduction duct is configured to blow air to the right side relative to the vertical center axis of the drying chamber, The second introduction duct is left to reference to the vertical center axis of the drying chamber Clothes dryer of cold and hot air variable supply control configured to blow air into the air. According to claim 1, A plurality of lifters are further attached along the longitudinal direction to distribute the laundry on the inner surface of the drum, a plurality of vent holes are formed in the lifters, the lifters are attached Cooling and hot air variable supply controlled clothes dryer having a plurality of sub-ventilating holes are formed on the outer surface of the drum to communicate with the venting holes of the lifters. The clothes dryer of claim 4, wherein a cross-sectional area of each outlet of each of the first introduction duct and the second introduction duct is larger than that of the lifters. The outlet of each of the first and second introduction ducts and the second introduction duct can be opened when the outlets of the first introduction duct and the second introduction duct and the lifters are aligned. The variable temperature controlled feed dryer of the first and second introduction ducts are located at a distance from the front end of the lifters so that the inner surface of the drum is located at a distance. 2. The partition according to claim 1, wherein the cabinet divides the inside of the cabinet into an area in which the drum is installed and an area in which the drum driving means, the blower, the first heating means and the second heating means are installed. Cold and hot air variable supply controlled clothes dryer with more means. The method of claim 7, wherein the partition means is made of a partition plate is installed to form a passage of air between the cabinet and the drum, the cold / hot air variable supply controlled clothing is connected to the discharge duct to the partition plate dryer. The clothes dryer of claim 7, wherein the partition means comprises an outer drum surrounding the drum to form an air passage, and the discharge duct is connected to the bottom of the outer drum. . 8. The apparatus of claim 1 or 7, further comprising an ultraviolet lamp for emitting ultraviolet rays to the heating chamber of the drum and an anion generator for supplying negative ions, wherein the drum driving means comprises a motor. A first fan and a second fan rotated by a single fan motor to blow air through the introduction duct and the second introduction duct, respectively, wherein the first heating means and the second heating means include the first introduction duct. A clothes dryer having a variable hot / cold supply control comprising a first heater and a second heater provided in each of the duct and the second introduction duct. The laundry machine according to claim 1, wherein the laundry circularly moving in accordance with the rotation of the drum has an angle (θ) of a lower portion of the vertical axis of the drum as 0 °. The minute rotation speed (rpm) of the drum having a radius (r) (m) to be separated from the inner surface of the drum in the range of Clothes dryer with variable supply control of cold and hot air is configured to satisfy.